Debt Fair Value Table (Details) (USD $) In Thousands, unless otherwise specified	4 Months Ended
	Nov. 01, 2012	Jun. 30, 2012		Dec. 31, 2011		Jun. 30, 2011
Debt Instrument [Line Items]
Stated interest rate on debt instrument		4.25%				4.25%
Less current portion		$ (36,777)		$ (16,774)		$ (20,226)
Total long-term debt		552,065		555,705		608,205
7.5% senior notes [Member]
Debt Instrument [Line Items]
Stated interest rate on debt instrument		7.50%
7.5% Senior Notes callable amount	101.25%
Carrying value		106,438	[1]	106,438	[1]	156,438	[1]
Estimated fair value		106,000	[1]	107,000	[1]	159,000	[1]
8.875% senior notes [Member]
Debt Instrument [Line Items]
Stated interest rate on debt instrument						8.875%
Carrying value						177,015	[1]
Estimated fair value						181,000	[1]
4.25% Convertible senior notes [Member]
Debt Instrument [Line Items]
Stated interest rate on debt instrument		4.25%
Carrying value (convertible debt)		148,077	[1]	143,367	[1]	138,933	[1]
Estimated fair value		145,000	[1]	172,000	[1]	192,000	[1]
Credit facility revolving loan [Member]
Debt Instrument [Line Items]
Carrying value		20,000	[2]	0	[2]
Estimated fair value		19,000	[2]	0	[2]
Credit facility term loan [Member]
Debt Instrument [Line Items]
Carrying value		313,500	[2]	321,750	[2]
Estimated fair value		298,000	[2]	321,000	[2]
Preceding credit facility revolver [Member]
Debt Instrument [Line Items]
Carrying value						155,000	[2]
Estimated fair value						155,000	[2]
Other [Member]
Debt Instrument [Line Items]
Carrying value (other)		827		924		1,045
Estimated fair value		$ 800		$ 900		$ 1,000

[1] The fair value of the parent company debt is based on observable inputs, which include quoted prices for similar assets or liabilities in an active market and market-corroborated inputs (Level 2). See also Note 7 for discussion of fair value.

[2] Credit facilities and other subsidiary debt may be traded on the secondary loan market, and the fair value of the Term Loan is based on either the last available trading price, if recent, or trading prices of comparable debt (Level 3). See also Note 7 for discussion of fair value.